1 files changed, 150 insertions, 0 deletions
diff --git a/svl/source/notify/SfxBroadcaster.cxx b/svl/source/notify/SfxBroadcaster.cxx
new file mode 100644
index 000000000000..2fe79033b3b7
--- /dev/null
+++ b/svl/source/notify/SfxBroadcaster.cxx
@@ -0,0 +1,150 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <assert.h>
+
+#include <tools/debug.hxx>
+
+#include <svl/hint.hxx>
+#include <svl/smplhint.hxx>
+#include <svl/lstner.hxx>
+
+#include <svl/SfxBroadcaster.hxx>
+#include <algorithm>
+
+TYPEINIT0(SfxBroadcaster);
+
+
+// broadcast immediately
+
+void SfxBroadcaster::Broadcast( const SfxHint &rHint )
+{
+    // notify all registered listeners exactly once
+    for (size_t n = 0; n < m_Listeners.size(); ++n)
+    {
+        SfxListener *const pListener = m_Listeners[n];
+        if (pListener) {
+            pListener->Notify( *this, rHint );
+        }
+    }
+}
+
+// unregister all listeners
+
+SfxBroadcaster::~SfxBroadcaster()
+{
+    Broadcast( SfxSimpleHint(SFX_HINT_DYING) );
+
+    // remove all still registered listeners
+    for (size_t nPos = 0; nPos < m_Listeners.size(); ++nPos)
+    {
+        SfxListener *const pListener = m_Listeners[nPos];
+        if (pListener) {
+            pListener->RemoveBroadcaster_Impl(*this);
+        }
+    }
+}
+
+
+// simple ctor of class SfxBroadcaster
+
+SfxBroadcaster::SfxBroadcaster()
+{
+}
+
+
+// copy ctor of class SfxBroadcaster
+
+
+SfxBroadcaster::SfxBroadcaster( const SfxBroadcaster &rBC )
+{
+    for (size_t n = 0; n < rBC.m_Listeners.size(); ++n)
+    {
+        SfxListener *const pListener = rBC.m_Listeners[n];
+        if (pListener) {
+            pListener->StartListening( *this );
+        }
+    }
+}
+
+
+// add a new SfxListener to the list
+
+void SfxBroadcaster::AddListener( SfxListener& rListener )
+{
+    for (size_t i = 0; i < m_Listeners.size(); ++i)
+    {
+        if (!m_Listeners[i]) // removed by RemoveListener?
+        {
+            m_Listeners[i] = &rListener;
+            return;
+        }
+    }
+    m_Listeners.push_back(&rListener);
+}
+
+
+// called, if no more listeners exists
+
+void SfxBroadcaster::ListenersGone()
+{
+}
+
+
+// forward a notification to all registered listeners
+
+void SfxBroadcaster::Forward(SfxBroadcaster& rBC, const SfxHint& rHint)
+{
+    for (size_t i = 0; i < m_Listeners.size(); ++i)
+    {
+        SfxListener *const pListener = m_Listeners[i];
+        if (pListener) {
+            pListener->Notify( rBC, rHint );
+        }
+    }
+}
+
+
+// remove one SfxListener from the list
+
+void SfxBroadcaster::RemoveListener( SfxListener& rListener )
+{
+    SfxListenerArr_Impl::iterator aIter = std::find(
+            m_Listeners.begin(), m_Listeners.end(), &rListener);
+    assert(aIter != m_Listeners.end()); // "RemoveListener: Listener unknown"
+    // DO NOT erase the listener, set the pointer to 0
+    // because the current continuation may contain this->Broadcast
+    *aIter = 0;
+
+    if ( !HasListeners() )
+        ListenersGone();
+}
+
+bool SfxBroadcaster::HasListeners() const
+{
+    for (size_t i = 0; i < m_Listeners.size(); ++i)
+    {
+        if (m_Listeners[i]) {
+            return true;
+        }
+    }
+    return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */